Returns a list instead of str for "title"

Downstream bug: https://github.com/Diaoul/subliminal/issues/1235

```shell
guessit -a "Adam-12 1968 Season 1 Complete x264 [i_c]/Adam-12 S01E02 Log 141 The Color TV Bandit.mkv"
```

Returns `"title" = ["Adam","12"]`

`subliminal` is expecting a `str` so it leads to `TypeError`.

The title is "Adam-12" (a `str` as expected) with only the filename, not the parent folder.